Multi-code OBD2 diagnosis
Enter all the codes your scanner showed, not just the first one. We give you the overall severity, whether you can keep driving, the order in which to check them and how they relate to each other.
Summary
- Overall severity
- High
- Can I keep driving?
- Yes, but with caution
- Estimated cost
- $50 to $1,000
- Codes analyzed
- 1 of 1
The order below is the recommended one: first the codes that can cause the others. After each repair, clear the codes and check which ones come back.
Order of inspection
U1000 Vehicle Data Network Communication Failure (Manufacturer Code) High
The U1000 code means a module stopped communicating properly with the rest over the data network. It is a manufacturer code, very common on some brands, and it often shows up in several modules at once. The cause is almost never a failed module: it is the battery, the grounds or the network wiring.